# REGENALL Command [GstarCAD 2020](Help%20System/GSTARCAD/2020/Index.md) → [Commands](Help%20System/GSTARCAD/2020/Commands/(Commands).md) → [R](Help%20System/GSTARCAD/2020/Commands/R/(R).md) The REGENALL command is used to regenerate the drawing and refresh all viewports. Command Access: > **Menu:** View \> Regen All **Command:** REGENALL Command Prompts: > Regenerating model. Function Description: This command could regenerate the whole drawing and recalculate all screen coordinates of objects. As well it could regenerate graph database index to optimize display and object selection performance. ## Other versions with matching text [GstarCAD 2016](../../../2016/Commands/R/REGENALL%20Command--3977e6a5b853.md) · [GstarCAD 2017](../../../2017/Commands/R/REGENALL%20Command--3977e6a5b853.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/Commands/R/REGENALL%20Command--3977e6a5b853.md) · [GstarCAD 2019](../../../2019/Commands/R/REGENALL%20Command--3977e6a5b853.md) · [GstarCAD 2021](../../../2021/Commands/R/REGENALL%20Command--3977e6a5b853.md)